Blending Magnetic Resonance Imaging and Numerical Simulation

摘要

Magnetic Resonance Imaging(MRI)has been widely used for investigation of multiphase flow in porous media.Currently,the main issue of MRI in the oil industry is the capability to obtain a quantitative evaluation of petrophysical parameters and phase saturation during core displacement experiments.While the 1D process has already been analyzed,further research should be performed on the 2D(and 3D)problems.In this paper we present the results of the post-processing conducted on MRI 2D acquisitions relative to drainage experiments at different force regimes.The raw data from MRI are processed using an interpolating model based on a continuous distribution of decaying rates.This allows the determination of petrophysical parameters and dynamical quantities.We then compare MRI saturation fronts with numerical simulations,initializing the dynamical model with the petrophysical data from MRI.In this way we validate the consistency of the experimental procedure with the data interpretation and,finally,with the numerical model.